Thermal Resistance Calculator

Calculate thermal resistance (R-value) of a material layer: R = d / k.

m
W/(m·K)

Thermal Resistance

2.5000 m²·K/W

Thermal Resistance vs Material Thickness

Voir la formule →

Formule

## Thermal Resistance Thermal resistance quantifies how well a material layer resists heat flow. ### Formula **R = d / k** where d is thickness and k is thermal conductivity. Higher R means better insulation. For multiple layers, R-values add in series.

Exemple Résolu

10 cm of fiberglass insulation (k = 0.04 W/(m·K)).

  1. 01R = d / k
  2. 02R = 0.1 / 0.04
  3. 03R = 2.5 m²·K/W